Datasheet

270
7734Q–AVR–02/12
AT90PWM81/161
If I
OL
exceeds the test condition, V
OL
may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test condition.
4. Although each I/O port can source more than the test conditions (20mA at V
CC
= 5V, 10mA at V
CC
= 3V) under steady state
conditions (non-transient), the following must be observed:
SO20 and TQFN Package:
1] The sum of all I
OH
, for all ports, should not exceed 400mA.
2] The sum of all I
OH
, for ports B6 - B7, D0 - D3, E0 should not exceed 150mA.
3] The sum of all I
OH
, for ports B0 - B1, D4, E1 - E2 should not exceed 150mA.
If I
OH
exceeds the test condition, V
OH
may exceed the related specification. Pins are not guaranteed to source current
greater than the listed test condition.
5. Minimum V
CC
for Power-down is 2.5V.
6. Propagation delay of the internal comparator with 100mV overdrive condition.
7. accuracy : ±8% from -40°C to +125°C.
22.3 Clock Drive Characteristics
22.3.1 Calibrated Internal RC Oscillator Accuracy
22.3.2 Watchdog Oscillator Accuracy
22.3.3 External Clock Drive Waveforms
Figure 22-1. External clock drive waveforms.
Table 22-1. Calibration accuracy of internal RC oscillator.
Frequency V
CC
Temperature Calibration accuracy
Factory calibration 8.0MHz 3V 25°C ±1%
Factory calibration
8.0MHz 2.7V - 5.5V
-40°C +
or 125°C
±6%
User calibration 7.6MHz - 8.4MHz 2.7V - 5.5V -40°C +105 or 125°C ±5%
Table 22-2. Accuracy of watchdog oscillator.
Frequency Accuracy
128kHz ±40%
V
IL1
V
IH1